Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon, showing our new design; and,

FIG. 2 is an enlarged, partial view thereof.

The evenly spaced broken lines represent a display screen or portion thereof with icon that form no part of the claimed design. The dot-dash broken lines represent boundary lines and form no part of the claimed design. 

CLAIM We claim, the ornamental design for a display screen or portion thereof with icon, as shown and described. 